books/reports/BalanceSheet/BalanceSheet.js

import { unique } from 'frappe/utils';
import { getData } from '../FinancialStatements/FinancialStatements';

class BalanceSheet {
  async run({ fromDate, toDate, periodicity }) {
    let asset = await getData({
      rootType: 'Asset',
      balanceMustBe: 'Debit',
      fromDate,
      toDate,
      periodicity,
      accumulateValues: true,
    });

    let liability = await getData({
      rootType: 'Liability',
      balanceMustBe: 'Credit',
      fromDate,
      toDate,
      periodicity,
      accumulateValues: true,
    });

    let equity = await getData({
      rootType: 'Equity',
      balanceMustBe: 'Credit',
      fromDate,
      toDate,
      periodicity,
      accumulateValues: true,
    });

    const rows = [
      ...asset.accounts,
      asset.totalRow,
      [],
      ...liability.accounts,
      liability.totalRow,
      [],
      ...equity.accounts,
      equity.totalRow,
      [],
    ];

    const columns = unique([
      ...asset.periodList,
      ...liability.periodList,
      ...equity.periodList,
    ]);

    return { rows, columns };
  }
}

export default BalanceSheet;